B.I.G. Enterprises, Inc. was deeply involved with the Department of Homeland Security upgrade program for the US to Canada and the US to Mexico borders. Part of that program was the development of a B-Level inspection booth to serve passenger automobiles, as well as commercial trucks. The unit has a lower and an upper level for the guard to speak with the drivers and the levels are accessed by an interior stairway. Units feature ballistic construction, high output HVAC, extensive electrical, security and data and communications preparation.